Form for concrete blocks and method of removing blocks therefrom



J 1', 1924 1,479,298 A. G. HATCH FORM FOR CONCRETE BLOCKS AND METHOD OF REMOVING BLOCKS THEREFROM Filed Nov. 2, 1921 fll@ '7 6 flew- H i I GHaZ'ch Qy MW M [I y Patented Jan. 1, 1924.

UNITE-D5 wazaa ARTHUR G. HATCH, OF DULUTH, MINNESOTA.

roam non CONCRETE BLooKsnm) METHOD .QF- nnivrovme BLOCKS THEREFROM.

7 Application filed Nove nber 2, 1-521; Serial t; 512,207.. I

To all 'whom it may concern: i r

Be it known that I, ARTHUR G. HA'roH,a citizen of the United States, residing at v Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Forms for Concrete Blocks and Methods of Removing Blocks cult to remove the green blocks without breaking them. Efforts have been made to secure quantity production by formmg blocks in large gang molds but with these r molds also, the blocks must remain in place until well set.

It is an object of the present invention to provide molds having removable sections and which sections are adapted to facilitate the removal of the blocks.

It is a further object to provide molds of this character adapted to form grout grooves or other markings in the sides of the blocks,

the portions of the form entering the markings aiding in removing the blocks.

Itis an additional object to provide an improved method of removing the blocks with such a form.

Other and further objects will appear as the description proceeds.

Broadly, my invention comprises a gang form or a form adapted for the simultaneous casting of a number of blocks, this form having fixed members and removable members, the latter having portions adapted to extend within the contour of the blocks.

In the preferred form, these portions form grout grooves. It is by means of these portions extending into these blocks that the of Figure 1 It further consists in a method of and of aisecond section rigidly connected at,

right angles thereto, thesecond section forming one end of the adjacent blocks. 7

Q1 have illustrated a preferred embodiment of my ,invention ings iirwhich-A T Figure 1 is a vplan viewof a embodying my invention v V Figure 2 is: a section taken upon line 22 gang mold Figure 3 is a sectiontaken nponi line 3-3 of F igure 1 and Figure {l is a perspective viewof'one of.

the removable form members.

I,The form as shown in Figure 1 comprises the removable end members 6. and 7, the side members 8 and 9, and a fixed dividing. mem ber 10, the latter beingbestshown in Figure-2. v

In the preferred form, the side member. 9 isformed integrally with the bottom mem-' ber 11. The central dividing member 10 comprises two upwardly extending portions which are integral with the member 11. The member 11 is formed to give the desired contour to the blocks.

In the form shown, each block is provided with the narrow flange 12 and wide flange 13, adjacent blocks being oppositely faced so that the wide flanges are adjacent each other. As shown in Figure 3, the blocks are provided with. thickened'end ribs 14 which join the two flanges.

The removable form members 15 shown in Figure 4, have the portions 16 adapted to extend between the wide flanges on adjacent blocks. They are further provided with cross portions 17 adapted to form an end of each of the two adjacent blocks. Each of these portions 16 and 17 is provided with an enlarged rib 18 which serves to form a grout groove in the edge faces of the block. The member 15 is further provided with the flange 19 upon the lower edge of its portion 16. This flange aids in lifting the blocks in removing them from the molds. As shown in Figure 1, the outer face of each portion 17 of the movable member has its enlarged rib 18 cut away at its center to permit the insertion of the end of the portion 16 of the adjacent removable member 15; The adjacent members are thus interlocked.

In the use of this form of molds,'the movable members are all assembled in place in in the accompanying draw "they maybe removed and placed upon racks or other suitable drying means. As

they are then exposedon all sides to the air, they cure more rapidly than if they were allowed to remain in the molds. Further, due to the assistance which the removable members 15 afford, the blocks may be removed from the mold much more quickly and in a greener state than would be possible were the blocks handled directly.

I am aware that my invention may be modified for application to varying conditions and for use in the formation of differing contour and it is my intention to cover all modifications coming within the spirit and scope of the appended claims.

I claim:

1. The method of removing concrete blocks from molds comprising moving'the block away from a fixed part of the mold by means of a portion of the mold forming lateral faces of the block.

2. The method of removing concrete blocks from molds comprising moving the block away from a fixed part of the mold by means of movable part of the mold, said movable part having portions extending within the contour oftheblock."

3. A mold for forming concrete blocks comprising fixed members and removable members, the latter comprising T-shaped sections adapted to form intersecting faces of each of two adjacent blocks.

4. A mold for forming concrete blocks comprising fixed members "and removable members, the latter comprising T-shaped sections adapted to form'intersecting faces of each of two adjacent blocks, said sections havingportions adapted to extend within the contour of the block.

5. A mold for forming concrete blocks comprising fixed members and removable members, the latter comprising T-shape d sections adapted to form intersecting faces of each of two adjacent blocks, said sections having portions adapted to form grout grooves in the blocks.

Signed at Duluth, Minnesota, this 24 day of @tober, 1921.

ARTHUR G. HATCH. 

